Automatically-operated gate and door



G. W. BROWN.

AUTOMATICALLY OPERATED GATE AND DOOR.

APPLICATION FILED APR.9,1921.

1,390, Pmmedsept. 6,1921.

2 SHEETS-SHEET I G. W, BROWN.

AUTOMATICALLY OPERATED GATE AND DOOR.

APPLICATION FILED mm, 1921.

LSOQO 1 5., Patented Sept. O, 1921.

2 SHEETS-SHEET 2.

i l Mm \l Q, M kw O f r" z:

Ill N I igtl I I I 1 L tr new GEORGE W. BROWN, OF FORT WORTH, TEXAS, ASSIGNOR.OF ONE-FOURTH T0 H. M.

COLEMAN, OF INDIANAPOLIS, INDIANA.

AoToMA'rrcALLr-ornniernn earn AND noon.

ea ers.

Specification of Letters Patent.

Patented Sept. e, i921.

Application filed April 9, 1921. Serial No. 459,950.

To all whom it may concern:

Be it known that I, GEORGE vV. BROWN, a citizen of the United States of America, residing at Fort .VVorth, in the county of Tarrant and State of Texas, have invented certain new and usefullmprovements in Automatically-Operated Gates and Doors, of which the following is a specification. r

My invention relates to automatically operated gates and doors; and the object is to provide double gates or doors which will be automatically opened and closed by a moving vehicle and without the attention of a person to open or close the gates or doors. One advantage isin the use of automobiles and garages,aperson can drive in the garage without having to get out in the rain, if it should be raining, and he can also get in the automobile while standing in the garage and back out. The doors will open automatically on the approach of the vehicle and automatically close when the vehi- This is true also of ole leaves the doors. gates on farms, ranches,'and other places. Other objects and advantages will be fully explained in the following description and the invention will be more particularly pointedout in the claims.

Reference is'had to the accompanying drawingswhich form a part of this application} 1 Figure 1 is a perspective view of the improvement applied to gates. Fig. 2 is a front view of a garage, showing the doors swung open and showing the track down and showing one door in dotted outline in closed position. Fig. 3 is a vertical longitudinal section of one track approach and showing a door gate in open position and showing the other track approach broken away. Fig. 4 is an enlarged detailed view of one of the throw levers and cooperating parts. Fig. 5 is a horizontal section of one of the uprights showing the provision for adjustment of the fulcrum bolt.

Similar characters of reference are used to indicate the same parts throughout the several views.

On each side of the gate a frame is provided consisting of two uprights 1 and 2 which are suitably connected at the bottom and braced by a block or sill 3. The only other connection of the uprights l and 2 to each other is by means of the fulcrum bolt at on which the door or gate swings.

This depressible beam 7 is supported on the fulcrum bolts 4 in the normal inoperative positlon when the doors are closed. Curved operating levers'S'are attached rigidly to the lower cross-bars 9 of the gates or doors, thesecross-bars projecting between the uprights; 1 and 2when the doors are closed,

.as in Fig. l and standing vertically between these uprights when the doors are open, as

in Fig. 2. A clevis 10 is pivotally connected to each end of the beam 7 and provided with a threaded shank 11. A link bar 12 is hung on the curved operating leVer S and provided with a threaded shank 13. A turn buckle 14c adjustably connects the shanks 18 and 11 and by such" means the throw of the doors or gates is regulated. The link bars 12 are hung on the levers 8 and pro-v vided with roller bearings 15 so that the link bars will readily depress the levers for rais mg the doors or gates when the depressible beam 7 is forceddownwardly by an approaching vehicle.

The approaches or drive ways 16 are ful- I crumed on supporting beams 17 and against abutments 18. The beams 17 may be of wood, stone, or concrete and. the abutment 18 can also be of wood, stone or concrete. The inner ends of the approaches 16 rest on the depressible beam 7 and the beam 7 is depressed when a vehicle moves on the approaches 16. The approaches 16 are duplicates. For automobiles or motor vehicles, the approaches may be constructed as shown in Figs. 1 and 3 with curved blocks 19 attached to suitable beams. For animal propelled vehicles, the approaches would have to be made with complete floors. The doors or gates '5 and 6 can be or willbe closed by gravity when the vehicle moves off of the approaches. For making the closing certain or positive, springs 20 are attached to the depressible beam 7 and to the doors 5 and 6. If the doors are slow in starting to close, the springs will act to start the doors. The springs 20 will also serve as cushioning means to prevent hammering of the Parts. Provision is made for regulating the tension of the springs. The levers 8 must have the proper curvature to permit the required movement of the doors and to v make the movement easily accomplished.

The gates and the doors are operated in the same manner. The doors21 to the garage 22shown in Fig. 2 are Operated in the same manner as the gates shown in Fig. 1.

For adqustmg the gate or door in case of sagging or other cause, provision is made for adjusting the door or gate. The upright 2 has a horizontal slot 2-3 is made for movenient of the bolt 4;. The bolt 4 is held at .difierent points of adjustment 'bya thumb screw 24. Thepressure of the gate or door against the fulcrum bolt 4 will keep/this bolt pressed against the screw 24. The adj ustmentof thefulcrum bolt will 'keepthe doors in alinement.

- The approach 16 for the inside of thegarage 2 need not be as long as the approach outside of the door. The abutment 18 should 7 be on a level with the ground. The ap proaches .16 .are held against displacement toward the gates ordoors by open hinges 25 Whichvcatchover'th'e beams 17 and are attached to the undersides of the ends of the I beams of the approaches 16. Theabutments -18 prevent outward displacement of the approaches 16. I

.WhatIclaim,.is,. a

1.,An automatically operated gate comprising fixed uprights on each side of the passage-way, a pair of swinging gate members provided with fulcrum bolts supported" in said uprights,-a depressible bar, link bars pivotally connected ;to said depressible bar and provided with roller bearings at their upper ends, curved leversattached to said I gate members and engaged bysaid link bars 40 through said roller bearings, and approaches to said gate members pivotally supported at .theirouter ends resting on said depressible bar and adapted to press said bardownwardly for opening said gate members;

2. An automatically operated gate comprising fixed uprights on each side of the assa e-wav a 'air of vertioall' swin i'n c: a V z: gate members provlded with fulcrum bolts pivotallyisupported'at their outer end resting loosely on said'depressible bar and adaptedtopress said 'bar downwardly and open said gate members when weight comes on tho'approaches' 3. An automatically operated gate comprising pairs of uprights on eachside of the passage-way, a pair of vertically swinging gate members provided with fulcrum bolts supported in said uprights and adapted to swing between the-members of said up-' rights, outwardly curved levers fixedly attached to said gate members, a depressible bar extending entirely across the passageway, adjustable link bars pivotally connected to said depressible bar and provided with roller bearings at their upper ends engaging said levers, springs attachedto said gate members-and to said depressible bar, and approaches pivotally mounted at their-lo'uter ends and resting loosely on saiddepressible bar and adapted to press said bar downwardly for opening said gatemembers.

In testimony whereof, I set my hand, this 5th day of April, A. D.,'1921 GEORGE w. BROWN. 

